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① 直接写出得数。(每题1分,共20分)
83-47=
783-267=
261÷9=
3.8+5.6=
46+23=
425+678=
6.3-3.1=
8.6-2.6=
6.3+1.59=
12.1×0.4=
4.52+0.08=
270÷5=
7.6-3.8=
3.9+6.1=
2.9+6.8=
5.6-1.9=
3.5+0.28=
3.63+0.07=
5.5÷10=
2.339×100=
83-47=
783-267=
261÷9=
3.8+5.6=
46+23=
425+678=
6.3-3.1=
8.6-2.6=
6.3+1.59=
12.1×0.4=
4.52+0.08=
270÷5=
7.6-3.8=
3.9+6.1=
2.9+6.8=
5.6-1.9=
3.5+0.28=
3.63+0.07=
5.5÷10=
2.339×100=
答案
1.36 516 29 9.4
69 1103 3.2 6
7.89 4.84 4.6 54
3.8 10 9.7 3.7
3.78 3.7 0.55 233.9
69 1103 3.2 6
7.89 4.84 4.6 54
3.8 10 9.7 3.7
3.78 3.7 0.55 233.9
② 列竖式计算。(每题3分,共12分)
$4.88+3.2=$
$62.6-8.86=$
$16.49+0.76=$
$24.75-5.49=$
$4.88+3.2=$
$62.6-8.86=$
$16.49+0.76=$
$24.75-5.49=$
答案
竖式略
8.08 53.74 17.25 19.26
8.08 53.74 17.25 19.26
③ 计算下面各题,能简算的要简算。(每题3分,共18分)
$41.7-19.4+25.8$
$14.5-2.17-8.83$
$65.1-44.21+34.9-55.79$
$7.41+2.36+1.59$
$50-12.14-7.86$
$9400÷25÷4$
$41.7-19.4+25.8$
$14.5-2.17-8.83$
$65.1-44.21+34.9-55.79$
$7.41+2.36+1.59$
$50-12.14-7.86$
$9400÷25÷4$
答案
48.1 3.5 0
11.36 30 94
11.36 30 94
